sqlitepager_ckpt_rollback  987 ext/sqlite/libsqlite/src/btree.c   rc = sqlitepager_ckpt_rollback(pBt->pPager);
sqlitepager_ckpt_rollback   94 ext/sqlite/libsqlite/src/pager.h int sqlitepager_ckpt_rollback(Pager*);